Core for yarn balls



Jan. 18, 1927. .6 .759

E. H. NEWTON -CORE FOR YARN BALLS Filed Jan. 20, 1926 INVENTOR ATTORNEY iii Patented Jan. 18, 1927,

UNITED STATES PATENT OFFICE.

EDWIN H. NEWTON, OF KANSAS CITY, MISSOURI, ASSIGNOR T0 NATIONAL PAPER, IBOX COMPANY, OF KANSAS CITY, MISSOURI, A CORPORATION OF MISSOURI.

CORE ron YARN BALLS.

Application filed January 20, 1926. Serial No. 82,456.

My invention relates to a core for yarn balls or the like, and has for its principal object to provide a device of that character which is simple and economical in construction and forms a firm but light weight core for such a purpose.

In accomplishing this object I have provided improved details of structure hereinafter described and pointed out in the appended claims, reference being had to the accompanying drawings wherein 1- Fig. 1 is a perspective view of a ball of yarn wrapped on a core of my improved construction, part of the ball and core being 5 broken away for better illustration.

Fig. 2 is a detail perspective view of the elements of the core before their assembly.

Fig. 3 is a perspective view of the core.

Fig. 4 is a perspective sectional View on the. line l 1-, Fig. 3.

Referring more in detail to the drawings,

1 designates a cylinder, preferably of coiled straw board or the like to provide a strong body of light weight, and 23 disks of the same material but of greater diameter than the cylinder, these three pieces constituting the elements of the core.

In manufacturing the core the cylinder and disks are cut to the desired dimensions and the disks moistened so that they "may be easily shaped. The cylinder is then located in a die (not shown), comprising a confining barrel within which the cylinder may fit snugly, a shelf for supporting the cylinder, and a center plug having a circular cutting die at its center. I

One of the disks is then placed over the end of the cylinder and a punch lowered onto the disk to force it into the cylinder, upsetting the edge of the disk to cup it within the wall of the cylinder and forcing the disk against the cutting die to cut a center hole 4 therein for receiving the finger of a winding machine. The die and punch are arranged to stop the disk at about the center of the cylinder, so that when the cylinder is reversed, the other disk may be forced into its opposite end and center cut to form a double diaphragm at the center of the cylinder, the two plies of which have registering apertures to receive the winding finger.

lVhile the disks may fit snugly within the cylinder to lock therein by friction I prefer to apply a coating of glue to the inner faces of the disks before pressing them into the cylinder so that the peripheral flanges of the diaphragms will adhere to the main wall of the cylinder and if the diaphragms are in contact, they will adhere one to the other to permanently unite the parts.

It is apparent that a core constructed as described will afford a strong but light weight center member for carrying a ball of yarn or the like which may be wound thereon, and one so inexpensive that it will add but little to the cost of the product.

Vhat I claim and desire to secure by Letters Patent is:

1. A core of the character described comprising a cylinder, separate diaphragms fitting within the cylinder contacting back to back and having edge flanges extending in opposite directions and engaging the wall of the cylinder.

' 2. A core of the character described comprising a cylinder, separate diaphragms fitting within the cylinder and contacting one with the other, the diaphragms having registering apertures and having edge flanges extending in opposite directions and engaging the wall of the cylinder.

3. In a core of the character described, a cylinder and a pair of disks pressed into the core from opposite ends thereof to form a double diaphragm, the edges of the disks being upset to lie along the wall of the cylinder at opposite sides of the diaphragm, the diaphragm members being glued one to the other and the edges of the disks being glued to the wall of the cylinder to form a unitary, reinforced structure.

In testimony whereof I aftix my signature.

EDWIN H. NEWTON. 

